Abstract: Described is a process for producing segmented polyurethanes having improved processing characteristics in the melt state and an efficient spinning process based thereon to form highly elastic, fine linear density elastane yarn and filament having improved mechanical and thermal properties by using hydroxyalkyl-terminated polysiloxanes in combination with specific crosslinking-capable polyisocyanates in the reaction of long-chain high molecular weight polyhydroxy compounds with organic diisocyanates and low molecular weight diols and also optionally further auxiliary and additive substances in the melt.
Type:
Grant
Filed:
December 1, 2000
Date of Patent:
October 28, 2003
Assignee:
Bayer Aktiengesellschaft
Inventors:
Siegfried Korte, Rolf-Volker Meyer, Stefan Hütte
Abstract: A particulate silicone based material and method for forming a heat resistant composite is provided. The particulate silicone based material is heated to a temperature between about 200° F. and about 400° F. The particulate silicone based material is cooled until a solid composite is formed. The solid composite is resistant to melting and thermal decomposition when heated to temperatures of at least 3000° F. The particulate silicone based material may be formed by mixing liquid silicone resin with a catalyst and powdered silicone molding compound.
Abstract: A silicone composition that includes at least one functionalized polydiorganosiloxane, at least one cure catalyst, at least one reactive diluant, and at least one thermally conductive filler is provided in the present invention. Further embodiments of the present invention include a method for substantially increasing the thermal conductivity of a silicone composition and a thermal interface material containing the aforementioned silicone composition.
Type:
Grant
Filed:
November 27, 2001
Date of Patent:
October 28, 2003
Assignee:
General Electric Company
Inventors:
Larry Neil Lewis, Steven Kennth Gifford, Slawomir Rubinsztajn
Abstract: It is an object of the invention to provide a clear coating composition, which can give coating films showing good water repellency, in other words a factor giving a care-free and deluxe feeling to car owners, and which are excellent in non-sanding recoatability in recoating dirtied coatings after due repair, as well as a method of forming a coating film and a multilayerd coating film.
The invention provides a clear coating composition which comprises
(A) 100 parts by mass of the sum of a crosslinkable coating film-forming resin and a crosslinking agent on the solid basis
and (B) 0.01 to 2 parts by mass of a ladder silicone copolymer obtainable by copolymerizing (b-1) a (meth)acryloxyalkyl-containing ladder silicone oligomer, (b-2) a crosslinkable functional group-containing ethylenically unsaturated monomer and optionally (b-3) another copolymerizable ethylenically unsaturated monomer.
Type:
Grant
Filed:
July 31, 2001
Date of Patent:
October 21, 2003
Assignees:
Nissan Motor Co., Ltd., Nippon Paint Co., Ltd.
Abstract: A coating composition having (A) an alcohol dispersion which includes silica having the hydrophobic surface and dispersed in an alcohol dispersion medium, the content of silica in a solid substance being 80% by weight or more; (B) a solution including a silicone oligomer which is obtained by a reaction of an alkoxysilane with water and has an average structural unit represented by R1nSiOx/2(OH)y (OR2)z (R1 representing an alkyl group, phenyl group or vinyl group, R2 representing an alkyl group and n, x, y and z representing numbers satisfying relations: 0.8≦n≦1.7, 2<x<3.2, y>0, z>0 and y+z=4−n−x); and (C) a curing agent. The coating composition exhibits excellent storage stability after the curing agent is added, suppresses aggregation of fine silica particles in spray coating and provides coating films having a high hardness and exhibiting excellent weatherability, water resistance, chemical resistance and adhesion.
Abstract: A novel siloxane polymer having at least a portion of the following formula:
wherein R13 is selected from hydrogen, lower alkyl group, benzyl, and phenyl group;
R14 and R15 are independently alkylene groups of 1 to 6 carbon atoms, xylylene, and phenylene groups of 6 to 12 carbon atoms, and;
m and n are integers independently selected from 1 through 6.
These polymers are useful as abrasion resistant coatings, especially for ophthalmic lenses.
Abstract: A process for polymerizing/curing a photopolymerizable monomer composition comprising at least one diepisulfide monomer which comprises the steps of:
a) mixing to the monomer composition an effective amount of a cationic photopolymerization initiator, and
b) irradiating the mixture of a) with an ultraviolet radiation to at least partially cationically photopolymerize the monomer composition.
Type:
Grant
Filed:
February 4, 2000
Date of Patent:
October 21, 2003
Assignee:
Essilor International Compagnie Generale d'Optique
Abstract: An antireflective coating may be formed on visible light transmitting materials. The antireflective coating may a stack of two coating layers. The first coating layer may be formed from a composition that includes a metal alkoxide. The first coating layer may be cured by the application of ultraviolet light or heat. The second coating layer may be formed from a second composition that includes an initiator and an ethylenically substituted monomer. The second composition may be cured by the application of ultraviolet light. The antireflective coatings may be applied to a plastic lens or a plastic lens mold.
Abstract: A redispersible or soluble product, optionally having a solids content higher than 10% by weight, obtainable by freeze drying an aqueous dispersion of a latex comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene; a printing ink comprising the above product; a coating dispersion or solution comprising the above product; and a method for making an antistatic or electroconductive layer comprising the steps of redispersing or diluting the above product by adding water or an organic solvent so as to obtain a dispersion or solution, optionally adding other ingredients to the coating solution or dispersion and applying the dispersion or solution to an object.
Abstract: Reaction product of a composition comprising in admixture a polyisocyanate, a silicone having dimethylsiloxane segments containing one or more isocyanate-reactive group, a reactant containing one or more of an isocyanate-reactive group and one or more ionizable group, optionally an organic substance having one or more isocyanate-reactive groups and no ionizable group, and compound providing counterion for said ionizable group, wherein either the silicone, or the reactant, or both, have a single isocyanate-reactive group.
Abstract: New etch barriers of indium-tin-oxide in the manufacturing process of thin film transistor-liquid crystal display are self-assembled monolayers, such as n-alkylsilanes. A typical process of applying a self-assembled monolayer is to ink a hydrolyzed n-octadecyltrimethoxysilane solution on to a stamp and then to transfer the solution onto ITO. The surface of the stamp may be polar enough to be wet with polar self-assembled monolayer solutions of an akylsilane. A non-polar stamp surface may be treated with oxygen plasma to obtain a wettable polar surface.
Type:
Grant
Filed:
December 28, 2000
Date of Patent:
October 14, 2003
Assignee:
International Business Machines Corporation
Inventors:
Stephen L. Buchwalter, Gareth Geoffrey Hougham, Kang-Wook Lee, John J. Ritsko, Mary Elizabeth Rothwell, Peter M. Fryer
Abstract: Synthetic polymers having hydrogen bonding capability and one or more polysiloxane moieties are capable of providing two distinct properties to paper products, such as tissues, which properties heretofore have been imparted through the use of at least two different molecules. The backbone of these synthetic polymers is based on modified vinyl polymers, such as polyvinyl alcohol, polyacrylamides and polyacrylic acids.
Type:
Grant
Filed:
February 7, 2001
Date of Patent:
October 14, 2003
Assignee:
Kimberly-Clark Worldwide, Inc.
Inventors:
Wen Zyo Schroeder, Daniel Arthur Clarahan, Mike Thomas Goulet, Thomas Gerard Shannon
Abstract: An adhesive composition that bonds at low temperatures is disclosed. The composition is a solution in an organic solvent of a polyimide, an epoxy resin, and a cyanate. The polyimide can be a polyimidesiloxane, made from a dianhydride, an aromatic diamine that does not contain siloxane, and a siloxane diamine. The adhesive composition can be used to make a single layer tape, a coated tape, or a double-sided trilayer tape. The tape can bond an article, such as a chip, to a substrate, such as a circuit board.
Abstract: A peelably sealed package includes a web having a peelable layer and a substrate having a surface layer. The peelable layer includes a blend of: i) from about 3 to about 15 weight parts polybutylene, ii) from about 40 to about 75 weight parts ionomer, and iii) from about 20 to about 55 weight parts ethylene/unsaturated ester copolymer such as a vinyl ester of aliphatic carboxylic acid or an alkyl ester of acrylic or methacrylic acid. The surface layer of the substrate includes a polyethylene having a density of from about 0.915 to about 0.93 g/cc, an ionomer, or a mixture of these polymers. The peelable layer of the web and the surface layer of the substrate are peelably sealed to each other in one or more selected areas. The peelable layer may form a peelable seal having a peel strength that is essentially equivalent regardless of whether the contact surface of the substrate is a polyethylene or an ionomer.
Type:
Grant
Filed:
February 5, 2001
Date of Patent:
October 7, 2003
Assignee:
Cryovac, Inc.
Inventors:
Janet W. Rivett, Stephen R. Tanny, Diane M. Hahm
Abstract: A coating formulation for application to surfaces associated with combustion, such as fuel injectors, and surfaces subjected to elevated temperatures, such as fuel supply components, to prevent the deposition at high temperatures of carbon or graphite on such surfaces, such as stainless steel and alloyed steel compositions. The coating formulation forms a thin layer of polymer coating on the surface by chemical grafting involving the use of a graft initiator to create active bonding sites, on the metal surface, for the silicone-based prepolymer to undergo polymerization on the metal surface. The bonding and polymerization are completed in a single application process without using complex equipment. The coating and process helps surfaces associated with combustion and surfaces subjected to elevated temperature reduce carbon or coke formation at temperatures up to 700° F. and thereby improves the durability and performance of those surfaces.
Type:
Grant
Filed:
March 23, 2001
Date of Patent:
October 7, 2003
Assignee:
Delavan Inc.
Inventors:
Chien-Pei Mao, Purushothaman Kesavan, Mohan Sanduja, Paul Thottathil, Carl Horowitz
Abstract: A semiconductor encapsulating epoxy resin composition is provided comprising (A) an epoxy resin, (B) a phenolic resin curing agent, (C) a molybdenum compound, (D-i) an organopolysiloxane, (D-ii) an organopolysiloxane cured product, or (D-iii) a block copolymer obtained by reacting an epoxy resin or alkenyl group-bearing epoxy resin with an organohydrogenpolysiloxane, and (E) an inorganic filler. The composition has improved moldability and solder crack resistance while exhibiting high flame retardance despite the absence of halogenated epoxy resins and antimony oxide.
Abstract: Additives for paints and inks which are suitable to be blended in paints and inks for high quality finishing are provided. The additive is characterized by comprising a copolymer having a number-average molecular weight of from 1,000 to 60,000 which is obtained by copolymerizing 2-50% by weight of reactive monomer containing in its molecule polydimethylsiloxane having a degree of polymerization of 5 to 100 with 98-50% by weight of reactive monomers which have been heretofore used as flow-and-leveling agents for paints and inks. When minor amounts of those additives are incorporated in paints or inks, drawbacks on painted or printed planes caused by environmental staining substances are prevented and the appearance of the painted or printed objects is improved.
Abstract: The present invention describes a die to manufacture pieces of plastic materials, molded by injection, projection or blowing processes that does not need end finishing during its construction, and that does not need to employ additional demolding agents during its whole useful life to release the objects molded. Said die is specially useful to obtain pieces of plastic materials that must be painted or must be dealt superficially with the purpose of being employed in various industries, such as the automobile industry, electro-domestic accessories manufacturing, communications, computers, or decoration, etc. This die is also specially useful to obtain pieces that must be adhered in an efficient and substantially permanent way to others as are the soles for the industrial manufacturing of shoes and of sports shoes.
Type:
Grant
Filed:
June 19, 2001
Date of Patent:
October 7, 2003
Inventors:
Julio Eduardo Pertusio, Jorge Alberto Escudero
Abstract: This invention is intended to provide a method for producing a resin composition used for paint which is preferable for improving dispersibility of pigments, thereby improving productivity. The method is characterized in that a plurality of pigments which consist a resin composition used for paint is mixed, the mixed pigments are dispersed at an optimal dispersion mixing ratio with a resin and a solvent, which has been found in advance using a Daniel Flow Point Method (a Flow Point Method), and then other components are added thereto to obtain the predetermined resin composition used for paint. It is particularly preferable for the resin composition used for paint to be an electrodeposition paint composition.
Abstract: A resin composition, which is obtained by quaternary salt-formation reaction, in the presence of a tertiary amine, of a copolymer and an amine-modified epoxide resin. Also disclosed herein is a water-borne coating comprising the resin. The coating composition can form superior coating film in surface appearance, adhesion, fabrication, coating film hardness, yellowing resistance and retort resistance, and has good coatability, and low organic solvent content.